/ Dictionary / Index J Jolly Roger: Meaning and Definition of Find definitions for: Jol'ly Rog'er Pronunciation: (roj'ur), [key] a flag flown by pirates, having the device of a white skull and crossbones on a black field. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jolly jumper Jolo Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language